One vertex per element, one color per generator, with an edge from x to x·s.
(2,7)(3,9)(8,14)(10,15)(17,18)(19,24)(20,26)(21,22)(23,28)(25,29)(27,32)(30,31) involution — undirected(1,2)(3,4)(5,8)(6,7)(9,11)(10,12)(13,14)(15,16)(17,19,23,30)(18,24,28,31)(20,27,29,21)(22,26,32,25)(33,34,38,42)(35,40,45,39)(36,37,41,48)(43,47,46,44)(3,9)(4,11)(5,13)(8,14)(17,20,23,29)(18,25,28,26)(19,21,30,27)(22,24,32,31)(33,35,38,45)(34,39,42,40)(36,46,41,43)(37,47,48,44)(1,3,6,9)(2,4,7,11)(5,10,13,15)(8,12,14,16)(17,20)(18,26)(19,27)(21,30)(22,31)(23,29)(24,32)(25,28)(33,36,38,41)(34,37,42,48)(35,43,45,46)(39,44,40,47)(1,4)(2,3)(5,12)(6,11)(7,9)(8,10)(13,16)(14,15)(17,21,23,27)(18,22,28,32)(19,29,30,20)(24,25,31,26)(33,35)(34,40)(36,46)(37,44)(38,45)(39,42)(41,43)(47,48)(1,5,6,13)(2,8,7,14)(3,10,9,15)(4,12,11,16)(17,22)(18,27)(19,26)(20,31)(21,28)(23,32)(24,29)(25,30)(33,37)(34,41)(35,44)(36,42)(38,48)(39,46)(40,43)(45,47)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.